mstorsjo created this revision.
mstorsjo added reviewers: sammccall, tstellar, smeenai, beanz.
Herald added subscribers: carlosgalvezp, mgorny.
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mstorsjo requested review of this revision.
Herald added projects: LLVM, clang-tools-extra.
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This avoids having to specify the location of all individual tools.
In current builds, one may want to specify LLVM_TABLEGEN, CLANG_TABLEGEN,
LLDB_TABLEGEN, LLVM_CONFIG_PATH, CLANG_PSEUDO_GEN and
CLANG_TIDY_CONFUSABLE_CHARS_GEN; specifying just the base directory
containing all of them is much more convenient.
Note that HOST_EXECUTABLE_SUFFIX is different from CMAKE_EXECUTABLE_SUFFIX
(the suffix used for the cross compiled binaries). There's an upstream
request for CMake to provide such a variable, e.g.
CMAKE_HOST_EXECUTABLE_SUFFIX, in
https://gitlab.kitware.com/cmake/cmake/-/issues/17553, but it hasn't been
implemented yet.
This is a bit of an RFC, we could of course factorize setting of
HOST_EXECUTABLE_SUFFIX to a helper function/macro, and possibly
factorize the whole setup (including checking LLVM_USE_HOST_TOOLS and
calling build_native_tools) of clang-pseudo-gen and
clang-tidy-confusable-chars-gen, as it does end up as a fair bit of
boilerplate.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D131052
Files:
clang-tools-extra/clang-tidy/misc/CMakeLists.txt
clang-tools-extra/pseudo/include/CMakeLists.txt
llvm/CMakeLists.txt
llvm/cmake/modules/TableGen.cmake
llvm/tools/llvm-config/CMakeLists.txt
Index: llvm/tools/llvm-config/CMakeLists.txt
===================================================================
--- llvm/tools/llvm-config/CMakeLists.txt
+++ llvm/tools/llvm-config/CMakeLists.txt
@@ -82,10 +82,23 @@
# Add the dependency on the generation step.
add_file_dependencies(${CMAKE_CURRENT_SOURCE_DIR}/llvm-config.cpp ${BUILDVARIABLES_OBJPATH})
-if(CMAKE_CROSSCOMPILING AND NOT LLVM_CONFIG_PATH)
- build_native_tool(llvm-config LLVM_CONFIG_PATH)
- set(LLVM_CONFIG_PATH "${LLVM_CONFIG_PATH}" CACHE STRING "")
+if(CMAKE_CROSSCOMPILING)
+ if (LLVM_NATIVE_TOOL_DIR AND NOT LLVM_CONFIG_PATH)
+ if (CMAKE_HOST_WIN32)
+ set(HOST_EXECUTABLE_SUFFIX ".exe")
+ else()
+ set(HOST_EXECUTABLE_SUFFIX "")
+ endif()
+ if (EXISTS "${LLVM_NATIVE_TOOL_DIR}/llvm-config${HOST_EXECUTABLE_SUFFIX}")
+ set(LLVM_CONFIG_PATH "${LLVM_NATIVE_TOOL_DIR}/llvm-config${HOST_EXECUTABLE_SUFFIX}")
+ endif()
+ endif()
+
+ if (NOT LLVM_CONFIG_PATH)
+ build_native_tool(llvm-config LLVM_CONFIG_PATH)
+ set(LLVM_CONFIG_PATH "${LLVM_CONFIG_PATH}" CACHE STRING "")
- add_custom_target(NativeLLVMConfig DEPENDS ${LLVM_CONFIG_PATH})
- add_dependencies(llvm-config NativeLLVMConfig)
+ add_custom_target(NativeLLVMConfig DEPENDS ${LLVM_CONFIG_PATH})
+ add_dependencies(llvm-config NativeLLVMConfig)
+ endif()
endif()
Index: llvm/cmake/modules/TableGen.cmake
===================================================================
--- llvm/cmake/modules/TableGen.cmake
+++ llvm/cmake/modules/TableGen.cmake
@@ -152,7 +152,18 @@
add_llvm_executable(${target} DISABLE_LLVM_LINK_LLVM_DYLIB ${ARGN})
set(LLVM_LINK_COMPONENTS ${${target}_OLD_LLVM_LINK_COMPONENTS})
- set(${project}_TABLEGEN "${target}" CACHE
+ set(${project}_TABLEGEN_DEFAULT "${target}")
+ if (LLVM_NATIVE_TOOL_DIR)
+ if (CMAKE_HOST_WIN32)
+ set(HOST_EXECUTABLE_SUFFIX ".exe")
+ else()
+ set(HOST_EXECUTABLE_SUFFIX "")
+ endif()
+ if (EXISTS "${LLVM_NATIVE_TOOL_DIR}/${target}${HOST_EXECUTABLE_SUFFIX}")
+ set(${project}_TABLEGEN_DEFAULT "${LLVM_NATIVE_TOOL_DIR}/${target}${HOST_EXECUTABLE_SUFFIX}")
+ endif()
+ endif()
+ set(${project}_TABLEGEN "${${project}_TABLEGEN_DEFAULT}" CACHE
STRING "Native TableGen executable. Saves building one when cross-compiling.")
# Effective tblgen executable to be used:
Index: llvm/CMakeLists.txt
===================================================================
--- llvm/CMakeLists.txt
+++ llvm/CMakeLists.txt
@@ -598,6 +598,7 @@
if( WIN32 AND NOT CYGWIN )
set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools")
endif()
+set(LLVM_NATIVE_TOOL_DIR "" CACHE PATH "Path to a directory containing prebuilt matching native tools (such as llvm-tblgen)")
set(LLVM_INTEGRATED_CRT_ALLOC "" CACHE PATH "Replace the Windows CRT allocator with any of {rpmalloc|mimalloc|snmalloc}. Only works with /MT enabled.")
if(LLVM_INTEGRATED_CRT_ALLOC)
Index: clang-tools-extra/pseudo/include/CMakeLists.txt
===================================================================
--- clang-tools-extra/pseudo/include/CMakeLists.txt
+++ clang-tools-extra/pseudo/include/CMakeLists.txt
@@ -1,7 +1,20 @@
# The cxx.bnf grammar file
set(cxx_bnf ${CMAKE_CURRENT_SOURCE_DIR}/../lib/cxx/cxx.bnf)
-set(CLANG_PSEUDO_GEN "clang-pseudo-gen" CACHE
+set(CLANG_PSEUDO_GEN_DEFAULT "clang-pseudo-gen")
+
+if (LLVM_NATIVE_TOOL_DIR)
+ if (CMAKE_HOST_WIN32)
+ set(HOST_EXECUTABLE_SUFFIX ".exe")
+ else()
+ set(HOST_EXECUTABLE_SUFFIX "")
+ endif()
+ if (EXISTS "${LLVM_NATIVE_TOOL_DIR}/clang-pseudo-gen${HOST_EXECUTABLE_SUFFIX}")
+ set(CLANG_PSEUDO_GEN_DEFAULT "${LLVM_NATIVE_TOOL_DIR}/clang-pseudo-gen${HOST_EXECUTABLE_SUFFIX}")
+ endif()
+endif()
+
+set(CLANG_PSEUDO_GEN "${CLANG_PSEUDO_GEN_DEFAULT}" CACHE
STRING "Host clang-pseudo-gen executable. Saves building if cross-compiling.")
if(NOT CLANG_PSEUDO_GEN STREQUAL "clang-pseudo-gen")
Index: clang-tools-extra/clang-tidy/misc/CMakeLists.txt
===================================================================
--- clang-tools-extra/clang-tidy/misc/CMakeLists.txt
+++ clang-tools-extra/clang-tidy/misc/CMakeLists.txt
@@ -3,7 +3,21 @@
Support
)
-set(CLANG_TIDY_CONFUSABLE_CHARS_GEN "clang-tidy-confusable-chars-gen" CACHE
+set(CLANG_TIDY_CONFUSABLE_CHARS_GEN_DEFAULT "clang-tidy-confusable-chars-gen")
+
+if (LLVM_NATIVE_TOOL_DIR)
+ if (CMAKE_HOST_WIN32)
+ set(HOST_EXECUTABLE_SUFFIX ".exe")
+ else()
+ set(HOST_EXECUTABLE_SUFFIX "")
+ endif()
+ if (EXISTS "${LLVM_NATIVE_TOOL_DIR}/clang-tidy-confusable-chars-gen${HOST_EXECUTABLE_SUFFIX}")
+ set(CLANG_TIDY_CONFUSABLE_CHARS_GEN_DEFAULT "${LLVM_NATIVE_TOOL_DIR}/clang-tidy-confusable-chars-gen${HOST_EXECUTABLE_SUFFIX}")
+ endif()
+endif()
+
+
+set(CLANG_TIDY_CONFUSABLE_CHARS_GEN "${CLANG_TIDY_CONFUSABLE_CHARS_GEN_DEFAULT}" CACHE
STRING "Host clang-tidy-confusable-chars-gen executable. Saves building if cross-compiling.")
if(NOT CLANG_TIDY_CONFUSABLE_CHARS_GEN STREQUAL "clang-tidy-confusable-chars-gen")
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